Name of the .NET type is within a string

[A.M-SG]

Hi,

I have a .NET type within a string like "System.Int16" or "System.DateTime".

How can I parse and and check if a string contains a valid value from that
type?

I am trying to build a function like this:

IsValidType("123","System.Int16"); // Should return true
IsValidType("1a3","System.Int16"); // Should return false
IsValidType("6/21/2001","System.DateTime"); // Should return true
IsValidType("34/21/2001","System.DateTime"); // Should return false

Is there any wat to create a function like that without using a big
switch(), case element?

Thank you,
Alan

 

[Morten Wennevik]

Hi Alan,

This method should work as long as you can call Parse(String) on the type. Note that date will return false unless you also specify the correct culture.

private bool IsValidType(string val, string typ)
{
Type t = Type.GetType(typ);
MethodInfo mi = t.GetMethod("Parse", new Type[]{typeof(String)});
try
{
object o = mi.Invoke(null, new object[]{val});
return true;
}
catch
{
return false;
}
}

 

[Jeffrey Tan[MSFT]]

Hi Alan,

Does Morten Wennevik [C# MVP]'s reply make sense to you? If you still have
any concern, please feel free to feedback. Thanks

Best regards,
Jeffrey Tan
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
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